Picture frame



FIG. 1 is a front right side perspective view of my new picture frame;

FIG. 2 is a rear right side perspective;

FIG. 3 is a right side elevation;

FIG. 4 is a left side elevation;

FIG. 5 is a front elevation;

FIG. 6 is a rear elevation;

FIG. 7 is a top plan view; and,

FIG. 8 is a bottom plan view.

The ornamental design for a picture frame, as shown and described.